a co 2 Injection pump system
A technology of injecting pumps and injecting pipelines, which is applied in the field of pump systems, can solve the problems of long pre-cooling process, consumption of pump medium, poor driving effect, etc., and achieve the goals of fast start-up, reduced volume and weight, and reduced emissions Effect
Active Publication Date: 2022-07-05
XIAN AEROSPACE PROPULSION INST +1
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Problems solved by technology
[0004] The purpose of the invention is to solve the existing CO 2 Injection pump system exists due to CO in the precooling process 2 It will vaporize quickly, and the reciprocating injection pump will 2 The driving effect is poor, and the vaporized CO needs to be discharged multiple times 2 , leading to the technical problems that the entire pre-cooling process takes a long time and consumes pump media, providing a CO 2 injection pump system
Method used
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[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0025] a CO 2 injection pump systems such as figure 2 As shown, it includes a control cabinet 16 (including frequency converters, electrical switches, etc.) and an injection pipeline, as well as an inlet shut-off valve 1, a centrifugal pump with an inducer 2, an inlet temperature gauge 3, and an inlet pressure gauge arranged in sequence along the injection pipeline. 4. Flow meter 5, inlet safety valve 6, inlet accumulator 7, reciprocating injection pump 8, outlet safety valve 9, outlet accumulator 10, outlet pressure gauge 11, the pipeline after outlet pressure gauge 11 is divided into two parts. A pre-cooling electric cut-off valve 12 is set on one way, and the branch pipeline is used as a straight pre-cooling pipeline (pre-cooling bypass), and the other way is sequentially provided with a one-way valve 13, an injection port pressure gauge 14 and an ou...
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The present invention relates to a pump system, in particular to a CO 2 Injection pump system, which can be used in coalbed methane and oil extraction. The purpose of the present invention is to solve the existing CO 2 The presence of CO in the injection pump system due to the pre-cooling process 2 will vaporize quickly, and the reciprocating injection pump will 2 Poor driving effect, requiring multiple emissions of vaporized CO 2 , resulting in the technical problem that the entire pre-cooling process takes a long time and consumes the pump medium, providing a CO 2 Fill the pump system. The system includes a control cabinet and an injection pipeline, as well as an inlet stop valve, a centrifugal pump with an inducer, an inlet pressure gauge, an inlet safety valve, a reciprocating injection pump, an outlet safety valve, and an outlet accumulator, which are arranged in sequence along the injection pipeline. , outlet pressure gauge, the pipeline after the outlet pressure gauge is divided into two paths, one is provided with a pre-cooling electric globe valve, and the other path is sequentially provided with a one-way valve and an outlet globe valve.
Description
technical field [0001] The invention relates to a pump system, in particular to a CO 2 Injection pump system, which can be used in coalbed methane and oil extraction. Background technique [0002] CO 2 (Carbon dioxide) The pump medium injected into the pump is low-temperature liquid CO in a critical boiling state 2 , the CO in this state 2 easily vaporizes, making CO 2 The injection pump has an air lock failure. To overcome this problem, CO 2 The injection pump usually adopts a lower pump stroke, that is, increasing the pump volume to reduce the pump stroke, so that the pump stroke usually does not exceed 300spm (strokes / min), so that CO 2 The calorific value of the plunger injected into the pump and the CO at the pump inlet 2 The losses are relatively small, which can significantly reduce the probability of gas blockage failures. However, increasing the pump volume will increase the volume and weight of the pump, due to the CO 2 The road conditions for the injectio...
Claims
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IPC IPC(8): F04B15/08F04B49/06F04B51/00F04B53/10
CPCF04B15/08F04B53/10F04B51/00F04B49/06F04B2015/0818Y02P90/70
Inventor 王伟光李瑜付瑜万金川许开富李随波刘晓光吴建光张守仁张兵陆小霞
Owner XIAN AEROSPACE PROPULSION INST